胰腺实性假乳头状瘤的超声造影表现

Role of contrast-enhanced ultrasound in diagnosis of pancreatic solid pseudopapillary tumor

目的 探讨超声造影对胰腺实性假乳头状瘤（SPTP）的诊断价值.方法 分析6例经手术病理证实的SPTP的超声表现;观察病灶的超声造影增强、消退的时间、增强速度及强化程度.结果 SPTP二维超声显示肿瘤边界清,呈实性、不均质包块,少数可见粗大钙化.超声造影显示肿瘤与胰腺同步或稍晚于胰腺增强,瘤内造影剂退出均早于胰腺,强化程度等或弱于胰腺,部分肿瘤可见包膜及分隔样强化.结论 SPTP超声造影表现具有一定特征性,结合二维超声有助于鉴别诊断.

Objective To summarize the manifestation of solid pseudopapillary tumor of the pancreas （SPTP） on ultrasound and contrast-enhanced ultrasound （CEUS） and to investigate the diagnostic value of CEUS. Methods The ultrasound and CEUS images of six patients with SPTP confirmed by pathology were reviewed. According to CEUS record,the enhanced and wash-out time,enhanced speed and degree of tumor were analyzed. Results On ultrasound, SPTP presented as solid, well-circumscribed masses, usually heterogeneous in echo texture, and some of them contained macro-calcification. On CEUS, the tumor enhanced simultaneously or slightly late compared with normal pancreatic tissues. The contrast agent washed out quickly in all tumors than in normal pancreatic tissues. The enhanced degrees were equal to or less than that of the normal pancreatic tissues. Some tumors showed capsule and septum enhancement. Conclusions The manifestation of SPTP on CEUS had some features and may be helpful for differentiation diagnosis combine with ultrasound.